Windows 7 does not recognize Hybrid nVidia graphics

Heya, first poster here.
I have a late 2009 MacBook Pro (unibody model) with two graphics chips (apparently this is a hybrid chip with 2 GPUs: 9400M and 9600M GT)
I have installed windows 7 using boot camp assistant, and usually the boot camp driver installation should launch after rebooting, right? well, it didn't.
I have tried getting the drivers off the OS X installation DVD that came with my MBP, but that's pretty much useless, as all it installs is CD or DVD sharing for MBAs.
I have tracked down and installed drivers for most things, so now almost everything works as intended (except for brightness and graphics, but I can live with the brightness thing), except that under win7 in device manager, the only graphics card that shows up is a "standart VGA adapter" instead of two nVidia cards. I've tried installing other drivers, but nothing works. I'm stuck with the default driver (VESA standart?) and the aero basic interface.
Now how can I get windows to recognize my hardware correctly? How can I install the right drivers for boot camp 3? I have tried googling my issue, but apparently I'm the first to run across it. (I have triple-checked: my MBP is the model with both graphics chips, just to rule that out)
Please help...

I don't know for what reason, or how, but my OS X installation DVD wouldn't launch the right setup. manually launching setup.exe in /Bootcamp folder on dvd worked. everything just dandy now.
move on, nothing to see here.

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